For street/hwy, I use BFG T/As.. 245-60-15 front (soon to be 255-60-15 front), 275-60-15 rear, both mounted on vintage TransAm mini-light 15x8 rims... tires are OK for cruising and have done a little hi-speed road course lapping sesions (bumping psi to 40 front, 38 rear).... decent but nothing to be screaming about good or bad... they are STREET/HWY tires... 60-series helps to absorb the stiff suspension ride. For competition autocross, I run Hoosier A6 275-45-16 front and rear on 16x10 light-weight road race rims... ultra-sticky (40 tread wear) and DOR legal (yes officer... DOT-legal).